Samsung’s New US Patent Moves Crypto Wallet Security Onto the Smart Contract
Samsung Electronics has filed a U.S. patent application for a digital asset wallet system that shifts core wallet functions onto a smart contract, allowing devices to initiate crypto transactions without directly storing or using a private key. According to an Oct. 6 report, the patent was published in the United States on July 23 under publication number US 2026/0212355, with Samsung listed as the applicant and a filing date of March 13, 2026.
The proposed system is notable because it targets the single largest point of failure in self-custody: the private key that must be protected but is also the only way to move funds.
How the System Works
Under the patent, one electronic device receives a registration request and authentication information from another device that will be used for crypto transactions. A separate transaction address is then created for the requesting device, and the address plus authentication details are sent to a blockchain network, where they are used to create a smart contract configured to perform wallet functions. Once created, the transaction address and the smart contract’s blockchain address are returned to the device.
When a user wants to transfer digital assets, the device sends the transaction information — recipient address, asset type and amount — along with its assigned address and authentication information to the smart contract. The contract compares the submitted details against what it already stores. If they match, the smart contract can process the transaction.
The result is that a device can initiate a transaction without providing a blockchain address and a signature generated from a private key. Private keys do not disappear from the system entirely: Samsung’s filing states that a final transaction may still rely on the smart contract’s blockchain address and private key. The key point is that the individual device requesting the transaction does not need to hold or use that key itself.
Multiple Devices, One Wallet
The proposed structure extends beyond a single device. The patent describes a system where several electronic devices work together to create, change or recover addresses used for crypto transactions. One device could request a transfer while another handles functions like registering a new device or recovering an address, with newly generated addresses and authentication data registered with the smart contract.
Samsung lists smartphones, computers, wearable devices and home appliances among the device types that could participate — a range consistent with its broader connected-device ecosystem rather than a phone-only wallet play.
The patent also identifies the motivation directly. Traditional self-custody wallets require users to protect private keys because losing them makes funds inaccessible, while exposing them lets another party take control. Entrusting keys to a service provider carries its own risks if the provider is hacked or shuts down. Samsung frames the management of that sensitive information as the central limitation of existing wallet structures.
A Long Blockchain Road for Samsung Devices
The filing builds on years of incremental work. Galaxy smartphones have supported the Samsung Blockchain Wallet and Blockchain Keystore for several years, and an earlier Ledger integration let users manage assets on supported hardware wallets through Galaxy devices. In 2025, Samsung integrated Coinbase access into Samsung Wallet for roughly 75 million Galaxy users in the United States.
Stablecoins are the next frontier. Samsung announced in July that it plans to add stablecoin support to Samsung Wallet, saying the service would eventually support stablecoins alongside existing payment, rewards and digital asset functions. The company has not named which stablecoins or networks it will support, provided a launch date, or identified technology partners.
Other Samsung Group companies have been building related infrastructure in South Korea. Samsung Securities, Samsung SDS and Samsung Card agreed in May to acquire a combined 4 percent stake in Dunamu, the operator of the Upbit crypto exchange, for 612.8 billion won — roughly 408 million USD. Samsung SDS later identified stablecoin infrastructure as an initial area of collaboration with Dunamu.
Why a Patent Matters More Than a Product — For Now
The filing does not confirm the technology will appear in Samsung Wallet, and Samsung has disclosed no commercialization timeline. A patent is a claim on a method, not a product roadmap, and large consumer electronics firms file far more applications than they ship.
Still, the direction is clear. The industry’s hardest UX problem — asking everyday users to safeguard private keys — is being attacked from the smart contract side, with account abstraction-style designs letting ordinary authenticated hardware trigger on-chain transactions. If Samsung ships something resembling this design at the scale of its device installed base, it would put contract-based wallets in the hands of users who have never heard the term. For now, it is one of the clearest signals yet that a major device maker sees wallet infrastructure as core to its future software stack.
Moving key management onto a smart contract is a bold swing for Samsung. US 2026/0212355 basically admits the private key on a phone is a liability, and they are right. Curious how revocation works if the device itself is compromised.
Replying to the revocation question above: the patent describes a separate transaction address created per requesting device, so presumably you rotate by re-registering. Still want to see what happens to funds if that smart contract gets paused or upgraded.
re-registering per device sounds clean until you lose both devices in the same week. recovery flow is where these wallet designs always get ugly
The patent text does mention re-registering a new device from a separate trusted one, so losing one phone is survivable. Losing both at once, yeah, pray you saved the recovery path somewhere else.
Guardians fix part of it. Safe has run social recovery for years where trusted keys unlock the wallet if devices vanish. Samsung will probably bury that in Knox settings and nobody will find it until moving day
buried in Knox is generous. samsung settings are where features go to die, they will ship recovery in one region and a blog post
carrier rollout speed criticism is fair but knox updates already ship globally without telcos. if this lives in the knox pipeline instead of the modem stack it dodges that whole problem
the patent hints at a recovery fallback but the wording is vague. moving day is exactly when these flows break, every AA wallet so far included
A registration request plus authentication info gets written into a contract that then performs wallet functions. Neat, but now your failure point is the contract code itself. One audit miss and every device tied to it is exposed at once.
one proxy upgrade bug and every galaxy device tied to that contract is exposed at once. hardware wallets at least fail per user, this design concentrates the blast radius
a contract wallet bug at samsung scale is a nightmare scenario, sure. but hardware wallets fail per user and users fail constantly. aggregated failure behind audited contracts probably nets out safer
fair on the blast radius but you are comparing one audited contract against a few hundred million seed phrases stored on phones. users lose those constantly, the contract at least fails once and gets patched
contract fails once and gets patched, except the patch rolls out at carrier-update speed across telcos. both models have ugly failure modes
patent US 2026/0212355 basically describes an account abstraction wallet with extra steps. samsung arriving years after metamask snaps, classic
the difference is samsung ships this on a few hundred million devices day one. distribution beats first mover every single time in this industry
What stands out to me is the second device doing authentication while the contract holds the wallet logic. Samsung is basically turning your other gadget into a hardware signer without calling it that.
second device auth works until both devices sit on the same ecosystem account. one iCloud compromise and your crude multisig is one signature
same account risk is why it needs a rival os device as the second signer. samsung wont do that tho, walled garden beats security again
same ecosystem compromise is the right worry but Knox has kept separate secure enclaves for a decade. if the auth device validates on enclave hardware its closer to a 2of2 than people think
Filed in March, published in July, reported now. The patent office moves faster than my banks 2FA rollout lol. Smart contract wallets are the correct endgame for self custody.
samsung patenting contract wallets in 2026 is years behind the account abstraction crowd. but if this ships on a few hundred million galaxy phones it skips the adoption curve entirely
the galaxy install base point is fair but metamask snaps didnt have to wait for a patent grant either. lawyers first, shipping later, classic samsung
patent was published july 23 and the report only landed now. they could have been quietly building since the march filing, patent timeline and ship timeline are different clocks
US 2026/0212355 filed march 13 reads like samsung clocked phone key storage as a liability two phone-drain summers ago. second device auth is basically a crude household multisig
Second device as the authenticator is quietly the biggest detail in US 2026/0212355. Samsung basically reinvented the hardware wallet and the hardware is a phone you already own.
march filing means they were designing this while the summer drain attacks were peaking. phone wallets needed this two years ago